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- Title
Uniaxial ratcheting behavior and fatigue life models of commercial pure titanium.
- Authors
Chang, Le; Wen, Jian‐Bin; Zhou, Chang‐Yu; Zhou, Bin‐Bin; Li, Jian
- Abstract
Abstract: The uniaxial fatigue and ratcheting behavior of commercial pure titanium (CP‐Ti) was investigated by asymmetric cyclic stress‐controlled experiments at room temperature. The effects of mean stress, stress amplitude, stress ratio, and peak stress on ratcheting behavior and fatigue life were discussed. It was found that increasing mean stress, stress amplitude, and peak stress or decreasing stress ratio reduced fatigue life and promoted ratcheting behavior. The applicability of different fatigue life models was analyzed, and a new stress ratio‐related failure model was proposed based on the exponential increase of fatigue life with stress ratio. Among all the models investigated in this study, the exponential stress ratio‐related model has more advantage in fatigue life predictions for CP‐Ti under ratcheting‐fatigue interaction.
- Subjects
MATERIAL fatigue; METAL fatigue; MECHANICAL stress analysis; FATIGUE cracks; FRACTURE mechanics
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2018, Vol 41, Issue 9, p2024
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/ffe.12839